The "My eBay" link should take you to your My eBay homepage or landing page. The page is user selectable among different My eBay pages. Each page should have a text link or else a little ribbon outline icon next to your feedback number.
To use Selling Overview as your landing page, navigate to that page and click on the little ribbon outline icon on the right side:
Seller Hub, on the other hand, is not like other My eBay pages, though. Once your My eBay landing page has been changed away from Seller Hub, I do not think there is a straightforward way to get it back.
One user has created a browser extension that overrides eBay's home page to allow Seller Hub to be chosen again. See here for details:
